Now, how can you get the tight, punchy bass from maybe 2 x 410s that works well with a 300 watt tube SVT? Will some 4-10s work better than others? I would like to get more punch without going to an 8-10. Rickenbackerman said his SVT does not like his D-410XLTs. I use the SVT with a D-410xlt and D-210xlt. It sounds good, but real loud in some rooms, the bass seems hard to control. I would like to be punchier. Are Aggies tighter than Eden? How about Bergs? Both are ported though, and I wonder if sealed cabs is the only remedy.